mouse-ear chickweed vs mouse eared chickweed

mouse-ear chickweed and mouse eared chickweed both are nouns.

Word	Noun	Adjective	Verb	Adverb
mouse-ear chickweed	Yes	No	No	No
mouse eared chickweed	Yes	No	No	No

As nouns, mouse-ear chickweed and mouse eared chickweed are synonyms defined as:

mouse-ear chickweed and mouse eared chickweed: any of various plants related to the common chickweed

Other synonyms of mouse-ear chickweed include chickweed, clammy chickweed, mouse ear.

mouse-ear chickweed (noun)	mouse eared chickweed (noun)
any of various plants related to the common chickweed	any of various plants related to the common chickweed